Origen de los "beachrocks" de la isla de La Palma, islas Canarias
- Francesc Calvet
- Francisco José Pérez Torrado
- Anna Travé Herrero
- Clemente Recio Hernández
- María del Carmen Cabrera Santana
ISSN: 1134-5306
Year of publication: 2005
Issue: 25
Pages: 73-84
Type: Article
More publications in: Vector plus: miscelánea científico - cultural
Abstract
The studied beachrocks outcrop in the SW coast of La Palma island, between the village of Puerto Naos and the Fuencaliente lighthouse. They are rudstones and arenites cemented by several aragonitic and calcian magnesian cements. Elemental and isotopic geochemistry indicates precipitation from marine waters slightly modified by meteoric waters. The ages of these beachrocks are comprised between 33.000 years BP (Charco Verde beachrock) to less of 350 years BP (Echentive beachrock). The evolution of these beach deposits follows three stages: i) beach deposition, ii) beachrock formation, and iii) beach retrogradation and/or erosion.